I’ve been using OnGUI in my games previously, but I’ve read that its performance is terrible on mobile. I’m starting to make a mobile game now, so I need to know.
What’s the performance difference of OnGUI, GUI Text/Texture, NGUI, and the new Unity GUI system? What’s best to use for mobile?
From just a general perspective, i would recommend to use Unity GUI for your new apps. For most cases, I would say it’s unlikely any of them would really be a problem.
Don’t believe everything you read.
–Eric
it’s terrible, relatively compared to a home brew solution 
Has anybody benchmarked these? If not, how could I go about benchmarking myself?